add missing epel dependency

defaults/main.yml

@@ -1,4 +1,6 @@
 ---
+certbot_packages_extra: []
+
 certbot_initial_run_enabled: False
 certbot_work_dir: /var/lib/letsencrypt
 certbot_config_dir: /etc/letsencrypt

molecule/ec2-centos-7/playbook.yml

@@ -2,7 +2,7 @@
 - name: Converge
   hosts: all
   vars:
-    python3_packages_extra:
+    certbot_packages_extra:
       - epel-release
 
   roles:

tasks/install.yml

@@ -1,18 +1,21 @@
 ---
-- name: Create certbot user '{{ certbot_user }}'
+- block:
+    - name: Install certbot
+      package:
+        name: "{{ item }}"
+        state: present
+      loop: "{{ certbot_packages_extra + __certbot_packages }}"
+
+    - name: Create certbot user '{{ certbot_user }}'
       user:
         name: "{{ certbot_user }}"
       become: True
       become_user: root
       when: not certbot_user == 'root'
+  become: True
+  become_user: root
 
-- name: Deploy certbot
-  block:
-    - name: Install certbot
-      package:
-        name: certbot
-        state: present
-
+- block:
     - name: Create certbot environment
       file:
         path: "{{ item.name }}"

vars/main.yml

@@ -0,0 +1,3 @@
+---
+__certbot_packages:
+  - certbot